This is a complete, new engine gasket set..this set contains all gaskets for top and bottom of your engine. This is for the vintage 1970's Honda CB550-4 (CB 550 Four CB 550/4) Motorcycle. This gasket set is for the 1974, 1975, 1976, 1977 and 1978 models including the Super Sport models.  Again this set is packed with gaskets and oil seal "O" rings/ valve seals etc...everything you need if you have a leak or are rebuilding or restoring your  550/4 now or in the future.  Includes cylinder base gasket and the expensive head gasket too, clutch cover gasket, valve inspection "o" rings rubber valve cover seal, 4 copper exhaust crush gaskets, alternator gasket and many other things your bike needs! Top quality aftermarket item. We only sell the best!  Very helpful if you are riding, racing or restoring one of these now vintage Honda Motorcycles.